/*
 * File    : PRUDPPacketRequestScrape.java
 * Created : 21-Jan-2004
 * By      : parg
 * 
 * Azureus - a Java Bittorrent client
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details ( see the LICENSE file ).
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package org.gudy.azureus2.core3.tracker.protocol.udp;

/**
 * @author parg
 *
 */

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.gudy.azureus2.core3.util.ByteFormatter;
import org.gudy.azureus2.core3.util.HashWrapper;

import com.aelitis.net.udp.uc.PRUDPPacketRequest;

public class PRUDPPacketRequestScrape extends PRUDPPacketRequest {
    protected List hashes;

    public PRUDPPacketRequestScrape(long con_id, byte[] _hash) {
        super(PRUDPPacketTracker.ACT_REQUEST_SCRAPE, con_id);

        hashes = new ArrayList();
        hashes.add(_hash);
    }

    public PRUDPPacketRequestScrape(long con_id, List hashwrappers) {
        super(PRUDPPacketTracker.ACT_REQUEST_SCRAPE, con_id);
        hashes = new ArrayList();
        for (Iterator it = hashwrappers.iterator(); it.hasNext();)
            hashes.add(((HashWrapper) it.next()).getBytes());
    }

    protected PRUDPPacketRequestScrape(DataInputStream is, long con_id, int trans_id)

    throws IOException {
        super(PRUDPPacketTracker.ACT_REQUEST_SCRAPE, con_id, trans_id);
        hashes = new ArrayList();
        byte[] hash;
        while (is.read(hash = new byte[20]) == 20)
            hashes.add(hash);
    }

    public List getHashes() {
        return hashes;
    }

    public void serialise(DataOutputStream os)

    throws IOException {
        super.serialise(os);

        for (Iterator it = hashes.iterator(); it.hasNext();)
            os.write((byte[]) it.next());
    }

    public String getString() {
        StringBuffer buf = new StringBuffer();
        buf.append(super.getString());
        buf.append("[");
        for (Iterator it = hashes.iterator(); it.hasNext();) {
            buf.append(ByteFormatter.nicePrint((byte[]) it.next(), true));
            if (it.hasNext())
                buf.append(";");
        }
        buf.append("]");
        return buf.toString();
    }
}
